<!DOCTYPE html>
<html lang="zh-CN">
	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<meta name="viewport" content="width=device-width, initial-scale=1">

		<title>title</title>

		<link href="css/bootstrap.min.css" rel="stylesheet">

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		<![endif]-->
	</head>
	<body>
		<h1>
			这是一个:
			<?php 
				echo "hello world"
				?>
		</h1>

		<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
		<script src="js/bootstrap.min.js"></script>
	</body>

</html>